姓名：章文扬

导师：高翔，李亚东

Institute of Plasma Physics, Chinese Academy of Sciences, P.O.Box 1126, Hefei,

Anhui 230031, P.R.China

博士中检

HT-7芯部湍流的实验研究

HT-7 CO2 scattering system

λi=10.6μm

ωi≈28THz >> ωp~108Hz

(refractive effects are negligible)θS < 0.48o (kθ,chord averaged)

K-matching: ks=ki+k

Bragg condition: k=2kisin(θS/2)

K-space resolution: Δk=2/a=2.5cm-1

Homodyne detection

k

ks

s

12cm-1 18cm-1 20cm-1 24cm-1

Te:1.2keV

s :1.86mm

2.23 3.34 3.72 4.46

Te:0.9keV

s :1.61mm

1.93 2.89 3.22 3.84

Te:0.6keV

s :1.31mm

1.57 2.35 2.62 3.14

Te:0.45keV

s :1.14mm

1.38 2.05 2.28 2.72

Te:0.3keV

s :0.93mm

1.11 1.67 1.86 2.23

1, Fluctuation level of the mode in channel kθ=12 cm-1

and channel kθ=20 cm-1 may be related to q profile

kθ=12 cm-1 kθ=12 cm-1 kθ=20 cm-1 kθ=20 cm-1

•Physics Letters A 374 (2010) 3508–3513•EPS Meeting June 21-25, 2010 in Dublin, Ireland•3th Westlake International Workshop on Fusion Theory and Simulation

2, A lower hybrid power critical threshold may exist in HT-7 plasma

•Physics Letters A 2011•23rd IAEA Fusion Energy Conference•3rd EFDA Transport Topical Group Meeting combined with the 15th EU-US Transport Task Force Workshop

•The fluctuation level of two channels acts differently beyond the threshold

•An e-ITB like structure form beyond the threshold

3, Scale separation between ion and electron heat transport

•4th International Workshop on Fusion Theory and Simulation•1st Asia Pacific Transport Working Group (APTWG) International Conference

•Density spectra tend to be anisotropic at higher k and may exhibit a flat region or modified power laws •Reduction of fluctuation is

well correlated with improved confinement

4, Doppler shift due to plasma rotation in the mode-converted ICRF D-H (7Li) plasmas have been observed

•PPCF,PRL(cooperation with X.J.Zhang)•Autumn conference of Chinese Physical Society, The Best Poster

A series preliminary work of transport sciences

2 3

1

4

List of Recent publications

Paper: [1] Study of density fluctuation during low hybrid current drive on HT-7 tokamak W.Y. Zhang, Y.D. Li, X. Gao, S.Y. Lin, Q. Zang, Y.X. Jie, X.D. Zhang, J. Li and HT-7 Teams Physics Letters A 374 (2010) 3508–3513 [2] Study of Short-scale turbulence in the presence of LHCD in HT-7 W.Y.Zhang, Y.D.Li, X.Gao, P.J.Sun, S.Y.Lin, X.D.Zhang, J. Li and the HT-7 Teams Physics Letters A (2011) [3] Particle confinement and transport coefficients in ac plasmas on the       HT-7 superconducting Tokamak  Nucl. Fusion 48 (2008) 035009 [4] Extension of operational limits on EAST Nucl. Fusion 47 (2007) 1353–1357

[5] Particle confinement and coherence of turbulence with lower hybrid current       drive on HT-7 tokamak Physics Letters A  375(2011) 579-585

Conference: [1] Experimental study of electron scale density fluctuation in low hybrid current drive on HT-7 Tokamak W.Y.Zhang*, Y.D.Li, X.Gao, S.Y.Lin, Q.Zang, Y.X.Jie, X.D.Zhang, J. Li and the HT-7 Teams  23rd IAEA Fusion Energy Conference, 11-16 October 2010 in Daejeon, Republic of Korea [2] Core plasma density fluctuation measurement in low hybrid drive experiment in HT-7 tokamak Y.D.Li, W.Y.Zhang, S.Y.Lin, X.Gao, X.D.Zhang, J.Li and HT-7 Team  EPS Meeting June 21-25, 2010 in Dublin, Ireland [3] The microscopic instabilities threshold watches in HT-7 tokamak Y.D.Li, W.Y.Zhang, S.Y.Lin, X.Gao, X.D.Zhang, J.Li and HT-7 Team 3rd EFDA Transport Topical Group Meeting combined with the 15th EU-US Transport Task Force Workshop, September 7-10, 2010 Cordoba, Spain [4] Experimental study of micro-instabilities in lower hybrid current drive on HT-7 tokamak W.Y.Zhang, Y.D.Li, X.Gao, S.Y.Lin, X.D.Zhang, J. Li and the HT-7 Teams  1st Asia Pacific Transport Working Group (APTWG) International Conference, National Institute for Fusion Science on June 14 – 17, 2011 [5] Experimental study of micro-instabilities on HT-7 tokamak W.Y.Zhang, Y.D.Li, X.Gao, S.Y.Lin, Q.Zang, Y.X.Jie, X.D.Zhang, J. Li and the HT-7 Teams  Opening Ceremony of Fusion Simulation Center & 4th International Workshop on Fusion Theory and Simulation, Beijing, October 20-22, 2010 [6] Study of density fluctuation during LHCD on HT-7 tokamak W.Y.Zhang, Y.D.Li, X.Gao,Thomson scattering, HCN, LH, HXR team and HT-7 Team  3th Westlake International Workshop on Fusion Theory and Simulation, Hangzhou, September, 2009 [7] Observation of Ion-Cyclotron-Frequencies Mode-Conversion Flow Drive on HT-7 W.Y.Zhang, Y.D.Li, X.J.Zhang, T.Lan, X.Gao, Z.X.Liu, P.J.Sun, X.D.Zhang, J. Liand the HT-7 Teams  Autumn conference of Chinese Physical Society, Hangzhou, September 15-18, 2011

Thank you